Window-sash fastener



E. H. WALTERS.

WINDOW SASH FASTENEB.

APPLICATION FILED SEPT. 14, 1921.

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UNITE STATES ?ATT OFFICE.

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WINDOW-EASE FASTENER.

Application filed September 14, 1921. Serial no. 500.473.

To all whom it may concern:

Be it known that I, EDWARD H. VVAL'rnRs, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Window-Sash Fasteners, of which the following is a specification.

My invention relates to window sash fasteners, and while useful in various places and for various structures, it is particularly useful for automobile tops where a quickoperating window and. ventilator is desirahle. In my device a pane of glass is vertically slidable in a frame, and the object of the invention is to provide simple and largely automatic means for supporting the pane at any desired elevation. l

I accomplish this object by the mechanism illustrated in the accompanying drawings in which- Figure 1 1s a vlew from the inside of the window showing the vertically movable pane in-partially raised position.

Figure 2 is an edge view of the structure looking toward the right in Figure 1. c

Figure 3 is a plan sectional detail on the line 33 Figure 1 and Figure a is a perspective view showing the operating mechanism on an increased scale.

Like numerals denote like parts throughout the several views. I

In the form selected to illustrate the invention there is a frame composed preferably of metal and formed in two parts 1 and 2. For convenience I will refer to these as the inner and outer frame members respectively. In practice they are held together by screws lor other appropriate means. In order to asslst the screws lIl preventing the frame members 1, 2 from slip ping relatively to each other, their contacting surfaces have diamond knurling 3. In the upper part ofthe frame is a fixed pane The inner beted to accommodate it, and the pane rests upon a shoulder 6 at the lower end of the rabbets, as best shown in Figure l. The inner frame has vertlcal frame member is rabgrooves 81 which.

form guides for the vertically movable pane 9. The parts are so arranged that themovable pane slides in a plane parallel and adj acent to the fixed pane. It is not essential. that the upper pane be the fixed one and the lower pane the slidable one, but the parts are here illustrated in this manner and will be so described to avoid'confusion.

I usually employ heavy panes of glass in order that they may possess sufficient strength without reinforcing borders. When I thus employ thick glass it is possible and desirable to form a recess 12 in it to accommodate the: fingers of the operatorv and make it easy for the pane to be raised or lowered.

Mountedon the frame at the side of the movable pane are two arms 15. These are held seated by pivot pins 16 having heads 17 at the outer end and. smaller heads 18 counter-sunk in the back side of the frame member 1, as best shown in Figure 3. At the free end of each arm is a handle 20 by which it may be rotated and a contactor 21 for engaging the slidable pane. The material best suited for the purpose is rubber. The arms bear upon bearing surfaces 22 formed on the frame and slanting towardthe surface of the slidable pane, as best shown in Figure 3. The result is that when an arm is in an upstanding position and starts to swing down ward and inward over the pane, the contactor 21 not only swings downward and in ward, but also moves directly toward the pane itself, the consequence being that finally the pressure of the contactor against the pane will be sufficient to produce enough frictional engagement between the pane and the frame to support the pane. In other words, the movement of the arm in swinging downward from upstanding to horizontal position has one component which is normal to the surface of the pane, and the result will be that the contactor will be pressed so tightly against the pane as to support it in the frame.

A lug 25 is formed on the surface of the inner frame member 1 in such position as to prevent the arm from descending below the horizontal position, as best shown in Figures 1 and 4:. Thus the lug acts as a stop 1, 3, l, inwh ichcase the arms. 1 5v are. in.

hori'zontallposition and the. pressure of the contactors 21 is great enough to" securely hold the slidable pane at the elevation to.

which it happens to be adjusted. If, now, the operator wishes to adjust theJpane toa higher position all that is necessary is to pu'shnnpwardr ontthe pane. The frictionai engagement of the: rubber contactors on the pane will cause thearms to swing upward andthis simultaneously moves the -contac-- torsaway from'thesurface; of the pane.

whereupon the action ofgravity on the armsl hepane thereupon becomes freely slidabl'e. When the p'ane' ha's been raised somewhat above the new elevation desired the operator permits; it to: move slightly downward,

augmented by the friction of the contactors upon the 'surface ofthe pane will cause the a-rmsvimmediateliy to swing' downward and:

reengage thepane and hold it at the new --:desired' elevation. It will be evident from this thatthe action isautomatic in the-sense that the pane is automatically released and that. the new level will be: automatically maintained. The device also has the advantageiof avoiding the needf-of perforating. or

notching the pane. The contactors tend at all: ti'rnes to engage: the pane, andv hence they will .takerhold at any and all points. It may lieisaid that thepane is thus adjustable iby dilferential' increments. If, now, the operatorwishes tolower vthep ane, he will first raise itisufiiciently to release the contactors and: then swing'the arms to vertical position, as shown: in Figure 2: and in dotted lines in Figure 4, In this position there is no tendand has: little tendency to get out of'order,

ency for the arms to engage the glass, andhence; the

freely.

It will be evident that the device issimple pane may be raised or lowered Ithas another advantage especially for movingvehicles, in that it'tends to prevent rattling: of the pane in the frame. The pane may be loose in itsguidesaorrabbets at the v sides of the frame, but as soon as the clamp-J I claim as new and ingarms 15 are-lowered they will press the contactors-firm'ly against the pane and prevent-the latter from vibrating.

Having thus: described my invention what desire to secure by Eetters- Patent is 1. window having a frame, a pane slidable therein, an arm pivoted to the frame upon an. axis oblique to the plane of the pane, whereby; rotation about its axis will bring the free end of the arm toward and of the arm will produce a movement of the from the surface of the pane, the plane of rotation of the arm being near enough to the plane of the pane to cause the free end of the arm to exert pressure upon the pane sub stantially normal to its surface when said arm is'rotated. to acting position.

2. A window having a frame, a pane slidable'. therein, an. arm having a contactor adaptedto frictionall'y .engagesai'dpane, and also to exert pressure onit normal to its surface anda pivot for pivotally securing the arm to the frame, the frame having a bearingsurface for-the arm which is oblique tothe surface of the pane whereby rotation contactor having a component normal to the surface ofthe pane, to thus cause said contactor to move towardaand away from the panezas the arm. is rotated. 31 A window having a frame, a paneslid able in: the frame, an arm pivoted to: the frame upon an axis slightly inclined from aline normalito the plane of the panewhere byrotation about" its axiswifll' bring the free. end"v of the arm toward. and from the surface of the pane, a. contactor mounted on the arm remotefrom the axis thereof and adapted to frictionally engage the pane-1 whereby a. sliding movement'ofthe pane in. one direction will cause the arm. to: increase: thepres- I sure of the contactor onthe pane and. a sliding movement ofthe pane in the oppossite: direction will cause the arm toi'decrease the pressure of the contactor upon. the pane, the axis of the arm being so positioned'loo that BidOWllWELBfli movement of the free; end of; the arm from. an approximately upstand' ing position' to. an approximately horizontal positionv will move the contactor'toward the pane, thereby eausingzgravity to" assist the arm in moving. the. contactor toward, the pane. J

4. A. window having a@ frame: arranged substantially vertically, a pane: slidable: ver-J tically in the frame, an arm pivoted'to. filleezll0 frame and: extending part way aerossl the pane, a contactor carried: at the free end of: the arm and adapted to-frictionally engage the pane,- the framehaving a. bearingsurface; disposed atxana angle to the surface: of? the. pane. in. such" manner that the downward swing'of 'the armi from an upstanding position willi move thecontactor not only downs ward but also toward-the pane to clamp. it

in the. frame, the contactor and arm being close enough. to the pane to! cause the' con tactor to engage the pane with? sufiicient pressure to be actuated by the latter before. the arm reaches horizontali position, where. by further-downward: movement of the pane: will; automatically. increase. the pressure of thecontactor. upon in.

5..In. combination, arwi'ndow frame, a1. pane sli'dable vertically in. said: frame, at arm pivoted to the frame and extending part way across the pane, a contaetor carried 'tactor not only downward but also toward at the free end of the arm and adapted to the pane to clamp it in the frame, and means frictionally engage the pane, the frame havfor limiting the downward swing of the 10 ing a bearing surface disposed at an angle arm.

to the surface of the pane in such manner In witness whereof, I have hereunto subthat the downward swing of the arm from scribed my name.

an upstanding position will move the con- EDWARD H. WALTERS. 

